scholarly journals Wild Blueberries Increase Fat Oxidation Rate During Moderate Intensity Exercise

2020 ◽  
Vol 52 (7S) ◽  
pp. 1083-1083
Author(s):  
Jessie Armendariz ◽  
Boe Burrus ◽  
Kari Pilolla ◽  
David Baston ◽  
Taylor Bloedon
Keyword(s):  
Oxidation Rate ◽  
Fat Oxidation ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise ◽  
Wild Blueberries

scholarly journals Increasing skeletal muscle carnitine content in older individuals increases whole‐body fat oxidation during moderate‐intensity exercise

Aging Cell ◽  
2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Carolyn Chee ◽  
Chris E. Shannon ◽  
Aisling Burns ◽  
Anna L. Selby ◽  
Daniel Wilkinson ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Body Fat ◽  
Fat Oxidation ◽  
Whole Body ◽  
Moderate Intensity ◽  
Older Individuals ◽  
Moderate Intensity Exercise

Substrate metabolism when subjects are fed carbohydrate during exercise

1999 ◽  
Vol 276 (5) ◽  
pp. E828-E835 ◽  
Author(s):  
Jeffrey F. Horowitz ◽  
Ricardo Mora-Rodriguez ◽  
Lauri O. Byerley ◽  
Edward F. Coyle
Keyword(s):  
Plasma Insulin ◽  
Fat Oxidation ◽  
Insulin Concentration ◽  
Peak Oxygen Consumption ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise ◽  
Plasma Insulin Concentration ◽  
Carbohydrate Ingestion ◽  
Low Intensity ◽  
Low Intensity Exercise

This study determined the effect of carbohydrate ingestion during exercise on the lipolytic rate, glucose disappearance from plasma (Rd Glc), and fat oxidation. Six moderately trained men cycled for 2 h on four separate occasions. During two trials, they were fed a high-glycemic carbohydrate meal during exercise at 30 min (0.8 g/kg), 60 min (0.4 g/kg), and 90 min (0.4 g/kg); once during low-intensity exercise [25% peak oxygen consumption (V˙o 2 peak)] and once during moderate-intensity exercise (68%V˙o 2 peak). During two additional trials, the subjects remained fasted (12–14 h) throughout exercise at each intensity. After 55 min of low-intensity exercise in fed subjects, hyperglycemia (30% increase) and a threefold elevation in plasma insulin concentration ( P < 0.05) were associated with a 22% suppression of lipolysis compared with when subjects were fasted (5.2 ± 0.5 vs. 6.7 ± 1.2 μmol ⋅ kg−1 ⋅ min−1, P < 0.05), but fat oxidation was not different from fasted levels at this time. Fat oxidation when subjects were fed carbohydrate was not reduced below fasting levels until 80–90 min of exercise, and lipolysis was in excess of fat oxidation at this time. The reduction in fat oxidation corresponded in time with the increase in Rd Glc. During moderate-intensity exercise, the very small elevation in plasma insulin concentration (∼3 μU/ml; P < 0.05) during the second hour of exercise when subjects were fed vs. when they were fasted slightly attenuated lipolysis ( P < 0.05) but did not increase Rd Glc or suppress fat oxidation. These findings indicate that despite a suppression of lipolysis after carbohydrate ingestion during exercise, the lipolytic rate remained in excess and thus did not limit fat oxidation. Under these conditions, a reduction in fat oxidation was associated in time with an increase in glucose uptake.

Training-induced alterations in fat and carbohydrate metabolism during exercise in elderly subjects

1998 ◽  
Vol 274 (5) ◽  
pp. E785-E790 ◽  
Author(s):  
Shahid Sial ◽  
Andrew R. Coggan ◽  
Robert C. Hickner ◽  
Samuel Klein
Keyword(s):  
Fatty Acid ◽  
Endurance Training ◽  
Average Rate ◽  
Fat Oxidation ◽  
Peak Oxygen Consumption ◽  
Moderate Intensity ◽  
Elderly Subjects ◽  
Elderly Persons ◽  
Moderate Intensity Exercise ◽  
Significant Change

Compared with young adults, fat oxidation is lower in elderly persons during endurance exercise performed at either the same absolute or relative intensity. We evaluated the effect of 16 wk of endurance training on fat and glucose metabolism during 60 min of moderate intensity exercise [50% of pretraining peak oxygen consumption (V˙o2 peak)] in six elderly men and women (74 ± 2 yr). Training caused a 21% increase in meanV˙o2 peak. The average rate of fat oxidation during exercise was greater after (221 ± 28 μmol/min) than before (166 ± 17 μmol/min) training ( P = 0.002), and the average rate of carbohydrate oxidation during exercise was lower after (3,180 ± 461 μmol/min) than before (3,937 ± 483 μmol/min) training ( P = 0.003). Training did not cause a significant change in glycerol rate of appearance (Ra), free fatty acid (FFA) Ra, and FFA rate of disappearance during exercise. However, glucose Raduring exercise was lower after (1,027 ± 95 μmol/min) than before (1,157 ± 69 μmol/min) training ( P = 0.01). These results demonstrate that a 16-wk period of endurance training increases fat oxidation without a significant change in lipolysis (glycerol Ra) or FFA availability (FFA Ra) during exercise in elderly subjects. Therefore, the training-induced increase in fat oxidation during exercise is likely related to alterations in skeletal muscle fatty acid metabolism.

(−)-Hydroxycitrate Ingestion Increases Fat Oxidation during Moderate Intensity Exercise in Untrained Men

2003 ◽  
Vol 67 (9) ◽  
pp. 1999-2001 ◽  
Author(s):  
Kyoko TOMITA ◽  
Yasuhide OKUHARA ◽  
Norihiro SHIGEMATSU ◽  
Heajung SUH ◽  
Kiwon LIM
Keyword(s):  
Fat Oxidation ◽  
Moderate Intensity ◽  
Moderate Intensity Exercise

scholarly journals Inclusion of sprints during moderate-intensity continuous exercise enhances post-exercise fat oxidation in young males

2021 ◽  
Author(s):  
Bruno Nicanor Mello-Silva ◽  
Gabriel Völz Protzen ◽  
Fabricio Del Vecchio
Keyword(s):  
Oxygen Uptake ◽  
High Intensity ◽  
Oxidation Rate ◽  
Lactate Concentration ◽  
Fat Oxidation ◽  
Moderate Intensity ◽  
Post Exercise ◽  
Young Males ◽  
Continuous Exercise ◽  
Physiological Demand

To assess the physiological demand of including high-intensity efforts during continuous exercise, we designed a randomized crossover study, where 12 physically active young males executed three different exercises in random order: FATmax - continuous exercise at the highest fat oxidation zone (FATmax); 2min-130% - FATmax interspersed by a 2-min bout at 130% of the maximal oxygen uptake associated intensity (iV̇O2max); and 20s:10s-170% - FATmax interspersed by four 20-s bouts at 170%iV̇O2max interpolated by 10s of passive recovery. We measured oxygen uptake (V̇O2), blood lactate concentration ([LAC]), respiratory exchange rate (RER), fat and carbohydrate (CHO) oxidation. For statistical analyses, repeated measures ANOVA was applied. Although no differences were found for average V̇O2 or carbohydrate oxidation rate, the post-exercise fat oxidation rate was 37.5% and 50% higher during 2min-130% and 20s:10s-170%, respectively, compared to FATmax, which also presented lower values of RER during exercise compared to 2min-130% and 20s:10s-170% (p<0.001 in both), and higher values post-exercise (p=0.04 and p=0.002, respectively). The [LAC] was higher during exercise when high-intensity bouts were applied (p<0.001 for both) and higher post-exercise on the intermittent one compared to FATmax (p=0.016). The inclusion of high-intensity efforts during moderate-intensity continuous exercise promoted higher physiological demand and post-exercise fat oxidation. Novelty bullets • The inclusion of 2-min efforts modifies continuous exercise demands • Maximal efforts can increase post-exercise fat oxidation • 2-min maximal efforts, continuous or intermittent, presents similar demands

scholarly journals A comparison of cardiovascular responses and fat oxidation rate induced by the isocaloric treadmill and cycle ergometer endurance exercise

2018 ◽  
Vol 5 (9) ◽  
pp. 3892
Author(s):  
Priyanka Sharma ◽  
Sunita Tiwari ◽  
Dileep Verma ◽  
Mayank Agarwal
Keyword(s):  
Blood Pressure ◽  
Endurance Exercise ◽  
Oxidation Rate ◽  
Cardiovascular Responses ◽  
Fat Oxidation ◽  
Cycle Ergometer ◽  
Treadmill Walking ◽  
Moderate Intensity ◽  
Normal Body Mass Index ◽  
Healthy Males

Background: Long duration moderate-intensity aerobic exercise is better called an endurance exercise. The commonest machines used for indoor endurance exercise are treadmill and cycle ergometer. The preferred modality of endurance exercise should be the one that induces higher fat oxidation and lesser cardiovascular response. The aim of the present study is to compare treadmill walking with cycling on the stationary upright ergometer for cardiovascular responses and fat oxidation rate at similar energy expenditure.Methods: The present experimental cross-sectional study involved physically inactive but otherwise healthy males, aged 20.1±1.8 years having a normal body mass index. Twenty-one participants completed thirty-minutes of treadmill walking and stationary upright cycling on separate occasions to expend approximately 180 Kcal. Systolic blood pressure (SBP), diastolic blood pressure, and heart rate (HR) were recorded just before and immediately after the exercise. Rate pressure product (RPP), a linear correlate of myocardial oxygen uptake, was calculated as the product of SBP and HR divided by 100. Fat oxidation rate was calculated by an indirect calorimetric equation based on the respiratory gas exchange analysis. The paired t-test was applied for comparative analyses. P<0.05 was considered significant.Results: Treadmill walking caused a significantly lower RPP and HR while a significantly higher fat oxidation rate than cycling on the stationary upright ergometer.Conclusions: Treadmill endurance exercise could be preferred over cycling for young healthy males. However, further studies are required for the external validity of our results which are approximate rather than precise due to limited resources.

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